Chapter 4

5. Show the output produced by each of the following program fragments. Assume that i and j are int variables.

(a) i = 5; j = ++i * 3 - 2;

printf("%d %d", i, j);

(b) i = 5; j = 3 - 2 * i++;

printf("%d %d", i, j);

(c) i = 7; j = 3 * i-- + 2;

printf("%d %d", i, j);

(d) i = 7; j = 3 + --i * 2;

printf("%d %d", i, j);

4.4

6. Supply parenthesis to show how a C compiler would interpret each of the following expressions.

(a) a * b - c * d + e

(b) a / b % c / d

(c) - a - b + c - + d

(d) a * - b / c - d

4.5

7. Give the values of i and j after each of the following expression statements has been executed. (Assume that i has the value 1 initially and j has the value 2.)

(a) i += j;

(b) i--;

(c) i * j / i;

(d) i % ++j;